Supersymmetry breaking in 5-dimensional space-time with S**1/Z(2) compactification

TL;DR

This paper investigates supersymmetry breaking mechanisms in 5D models compactified on S^1/Z_2, showing how residual N=1 supersymmetry can be spontaneously broken by classical configurations and exploring boundary interactions.

Contribution

It introduces a novel mechanism for spontaneous supersymmetry breaking in 5D orbifold models via stable classical wall-like configurations.

Findings

Residual N=1 supersymmetry can be spontaneously broken by classical wall configurations.

Boundary-localized fields can preserve N=1 supersymmetry in non-trivial ways.

Explicit models demonstrate the interplay between bulk and boundary fields in supersymmetry breaking.

Abstract

We consider supersymmetric models in 5-dimensional space-time compactified on S**1/Z(2) orbifold where N=2 supersymmetry is explicitly broken down to N=1 by the orbifold projection. We find that the residual N=1 supersymmetry is broken spontaneously by a stable classical wall-like field configurations which can appear even in the simple models discussed. We also consider some simple models of bulk fields interacting with those localized on the 4-dimensional boundary wall where N=1 supersymmetry can survive in a rather non-trivial way.